The 35-year-old will attend the big day with mum Debra Green, who was awarded an OBE for her charity work.

Sarah and Debra are among 1,200 guests invited by Harry and Meghan to Windsor Castle to watch them and their guests arrive and depart on May 19.

Last night Sarah, from Warrington, Cheshire, said: “I was thrilled when mum was invited and asked me to be her plus one. Meghan has changed my life and so it is fitting that I will get to see her on her wedding day, I’m so excited.

Sarah looks just like Meghan (Image: REX/Shutterstock)

Prince Harry might end up doing a double take (Image: PA)

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“Hopefully I won’t get mistaken for the real Meghan.”

Sarah, also an actress and charity worker, has been a professional lookalike since Harry and the Suits actress were engaged last year after her resemblance to the bride was picked up.

She now earns thousands for events and publicity campaigns.

Her mum Debra runs Christian charity Reclaim Our Communities.

Sarah said: “When the letter for mum to attend the wedding arrived we couldn’t believe it. It’s such an honour. She works so hard for the charity.”

Sarah even works as a Meghan lookalike

People started noticing her resemblance to the star (Image: John Gladwin/Sunday Mirror)

She's going to the wedding with her mum (Image: John Gladwin/Sunday Mirror)

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Married mum-of-two Sarah will be watching the Windsor wedding and then dashing off with a Prince Harry lookalike to an event in Surrey to work as Meghan’s lookalike.

Sarah, who also loves yoga like Meghan, said: “Meghan-mania has gripped the whole country but I’m loving it. I’ve been so busy.”

Earlier this month we told how Sarah was constantly mistaken for Meghan, 36, and asked for selfies on the street.